// wintest.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "wintest.h"
#include "ServerSocket.h"

#define MAX_LOADSTRING 100

#define WM_SOCKET WM_USER+0  
#define WM_SOCKET_READ WM_USER+1  
#define WM_SOCKET_WRITE WM_USER+2  
#define WM_SOCKET_CLOSE WM_USER+3  
#define BUFSIZE 1024

// Global Variables:
HINSTANCE hInst;								// current instance
WCHAR szTitle[MAX_LOADSTRING];					// The title bar text
WCHAR szWindowClass[MAX_LOADSTRING];			// the main window class name

ServerSocket* pServer=NULL; 


// Forward declarations of functions included in this code module:
ATOM				MyRegisterClass(HINSTANCE hInstance);
BOOL				InitInstance(HINSTANCE, int);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK	About(HWND, UINT, WPARAM, LPARAM);

int APIENTRY _tWinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPTSTR    lpCmdLine,
                     int       nCmdShow)
{
	UNREFERENCED_PARAMETER(hPrevInstance);
	UNREFERENCED_PARAMETER(lpCmdLine);

 	// TODO: Place code here.
	MSG msg;
	HACCEL hAccelTable;

	// Initialize global strings
	//LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	
	swprintf(szTitle,L"MySocketServer");
	swprintf(szWindowClass,L"MySocketWindow");
	//LoadString(hInstance, IDC_WINTEST, szWindowClass, MAX_LOADSTRING);

	MyRegisterClass(hInstance);

	// Perform application initialization:
	if (!InitInstance (hInstance, nCmdShow))
	{
		return FALSE;
	}

	hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_WINTEST));

	// Main message loop:
	while (GetMessage(&msg, NULL, 0, 0))
	{
		if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}

	return (int) msg.wParam;
}



//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
//  COMMENTS:
//
//    This function and its usage are only necessary if you want this code
//    to be compatible with Win32 systems prior to the 'RegisterClassEx'
//    function that was added to Windows 95. It is important to call this function
//    so that the application will get 'well formed' small icons associated
//    with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX);

	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= LoadIcon(hInstance, MAKEINTRESOURCE(IDI_WINTEST));
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName	= MAKEINTRESOURCE(IDC_WINTEST);
	wcex.lpszClassName	= szWindowClass;
	wcex.hIconSm		= LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

	return RegisterClassEx(&wcex);
}

//
//   FUNCTION: InitInstance(HINSTANCE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // Store instance handle in our global variable

   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

//
//  FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND	- process the application menu
//  WM_PAINT	- Paint the main window
//  WM_DESTROY	- post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	int wmId, wmEvent;
	PAINTSTRUCT ps;
	HDC hdc;

	switch (message)
	{
	case WM_CREATE:
		//MessageBox(hWnd,L"CREATE",L"CAPTION",MB_OK);
		if(!pServer)
		{
			pServer=new ServerSocket();
			int ret=pServer->init();
			if(ret==0)
				WSAAsyncSelect(pServer->getListenSocket(), hWnd,WM_SOCKET, FD_ACCEPT);
			else
				MessageBoxA(hWnd,"Create Error","Error",MB_OK);
		}
		break;
	case WM_SOCKET:
		/*if(WSAGETSELECTERROR(lParam))
		{
			MessageBox(hWnd,L"SOCKET ERROR",L"ERROR",MB_OK);
		}
		else*/
		switch(LOWORD(lParam))
		{
			case FD_ACCEPT:
				MessageBoxA(hWnd,"Received FD_ACCEPT","Message",MB_OK);
				WSAAsyncSelect(pServer->acceptClient(), hWnd,WM_SOCKET, FD_READ|FD_CLOSE|FD_WRITE);
				break;
			case FD_READ:
				{
					char recvbuf[BUFSIZE];
					int ret = recv(wParam, recvbuf, BUFSIZE, 0);
					sprintf(recvbuf,"%d",ret);
					//recvbuf[ret]='\0';
					MessageBoxA(hWnd,recvbuf,"Message",MB_OK);
				}
				break;
			case FD_CLOSE:
				MessageBoxA(hWnd,"Received FD_CLOSE","Message",MB_OK);
				closesocket(wParam);
				break;
			case FD_WRITE:
				MessageBoxA(hWnd,"Received FD_WRITE","Message",MB_OK);
				break;
			default:
				MessageBox(hWnd,L"Unrecognized Message",L"Message",MB_OK);
		}
		break;
	case WM_COMMAND:
		wmId    = LOWORD(wParam);
		wmEvent = HIWORD(wParam);
		// Parse the menu selections:
		switch (wmId)
		{
		case IDM_ABOUT:
			DialogBox( hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
			break;
		case IDM_EXIT:
			DestroyWindow(hWnd);
			break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
		}
		break;
	case WM_PAINT:
		hdc = BeginPaint(hWnd, &ps);
		// TODO: Add any drawing code here...
		EndPaint(hWnd, &ps);
		break;
	case WM_DESTROY:
		//MessageBox(hWnd,L"Destroy",L"CAPTION",MB_OK);
		if(pServer)
		{
			delete pServer;
		}
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	UNREFERENCED_PARAMETER(lParam);
	switch (message)
	{
	case WM_INITDIALOG:
		return (INT_PTR)TRUE;

	case WM_COMMAND:
		if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
		{
			EndDialog(hDlg, LOWORD(wParam));
			return (INT_PTR)TRUE;
		}
		break;
	}
	return (INT_PTR)FALSE;
}
